It can be a tricky process of using this app but you can open a VPNBook site to get help. You can install this VPN by downloading its available OpenVPN app in the App store. It can be compatible with Mac OS, iOS, Windows, and Ubuntu. This VPN service includes 5 server locations that also includes the UK and US server. This VPN service uses 256-bit AES encryption to secure your browsing or streaming and keeps your activity hidden. VPNBook is one of the best free VPN for MAC which offers you unlimited free data and doesn’t ask for an account for registration. We would probably be reviewing the best free VPN for Mac.